Engineering MOFs derived metal oxide nanohybrids: Towards electrochemical sensing of catechol in tea samples. (30th November 2022) - Iftikhar, Tayyaba
Graphical abstract: Highlights: Cu-MOF was prepared and used as ideal template to synthesize CuO via thermolysis. Cu-MOF/CuO/NiO nanohybrids were synthesized through a simple hydrothermal approach. Cu-MOF/CuO/NiO/GCE displayed high electrochemical sensing ability for CC detection. The electrochemical sensor was successfully applied to determine CC in tea samples. Abstract: In this work, we have successfully developed Cu-MOF/CuO/NiO nanocomposites (NCs) and employed as a novel electrochemical sensing platform in catechol (CC) detection. The Scanning electron microscopy (SEM) along Energy dispersive X-ray Analysis (EDX), Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) are carried out to characterize the as-fabricated Cu-MOF/CuO/NiO NCs. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques have used to obtain oxidation peak currents of CC. Glassy carbon electrode (GCE) modified with Cu-MOF/CuO/NiO has exposed the superb EC properties representing low limit of detection (LOD) of 0.0078 µM (S/N = 3). To assess the practicability of Cu-MOF/CuO/NiO based sensing medium, it has been used to detect CC from two varieties of tea, namely black and green. Thus, we anticipate that this structural integration strategy possesses encouraging application potential in sensing podium and material synthesis.